A.動(dòng)能為零,勢(shì)能最大 B.動(dòng)能為零,勢(shì)能為零 C.動(dòng)能最大,勢(shì)能最大 D.動(dòng)能最大,勢(shì)能為零
一平面簡(jiǎn)諧波的波動(dòng)方程為y=0.1cos(3πt-πx+-π)(SI),t=0時(shí)的波形曲線如圖所示,則下列敘述中哪個(gè)正確?()
A.O點(diǎn)的振幅為-0.1m B.頻率γ=3Hz C.波長(zhǎng)為2m D.波速為9m/s
A.,,-0.05 B.,1,-0.05 C.,,0.05 D.2,2,0.05